Timing Belt - Westerbeke 4.5KW BCGB-60HZ Operator's Manual

ENGINE ADJUSTMENTS
NOTE:
WESTERBEKE recommends that the following engine
adjustments be peiformed by a competent engine mechanic.
The infonnation below is provided to assist the mechanic.
TIMING BELT INSPECTION AND REPLACEMENT
Timing Belt Removal
A
CAUTION:
Water Dr oil on the timing belt severely
reduces the service life of the belt. Keep the timing
belt sprocket and tellSioner free of oil and grease.
7bese parts should never be cleaned. Replace if seri-
ously contaminated with dirt Dr oil. If oil is evident on
these
parts,
check tbe front
case,
oil pump oil seals,
and camshaft oil seals for
a
possible oil leak.
1.
Turn the crankshaft clockwise to align-the timing mark on
the camshaft sprocket and timing belt rear cover.
NOTE:
always tum the crankshaft clockwise.
TIMING
MARK
2. Remove the plug on the left surface of the cylinder block
and insert a rod with a diameter of 8mm (0.3lin.) to lock
the counterbalance shaft.
NOTE:
Be sure to use an inserting rod with a diameter of
8mm (0.31 in.).
2.6 IN (65MM)
--:J~~~*:::::1
ROO
CYLINDER
BLOCK
3. Loosen the timing belt tensioner nut.
4. Move the timing belt tensioner toward the water pump,
and temporarily tighten the nut to hold the tensioner in
that position.
TIMING BELT TENSIONER
PUMP
5. Remove the timing belt.
NOTE:
If
the timing belt is to be reused, draw an arrow on
the belt back to indicate the direction of rotation (clock-
wise).
Camshaft Sprocket Removal
1. Remove the bolt without turning the camshaft.
Oil Pump Sprocket Flange Nut Removal.
1. Remove the plug from the left side of the cylinder block.
2. Insert an 8 mm (0.31 in.) diameter round bar to lock the
counterbalance shaft.
3. Remove the nut.
OIL PUMP SPROCKET
NUT
Engines
&
Generators
29